Convert sanity images to webp in attempt to improve page loads

[bcho892]

https://www.sanity.io/answers/optimizing-image-file-sizes-in-studio-and-using-url-parameters-for-width-and-format-

created server compatible class called SanityImageUrl in client/sanity/lib/utils.ts to allow for basic manipulation of the image urls.

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit f59a274):

https://uasc-ceebc--pr749-748-frontend-compres-ehvmbnfy.web.app

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